* {
    margin: 0;
    padding: 0
  }
  //清除ul li a基本样式
  ol, ul, li {
    list-style: none;
  }
  a {
    text-decoration: none;
    color: #000;
  }
  img {
    border: none;
  }
  input {
    border: none;
  
  }
  //主要版式
  .main {
    width: 1225px;
    margin: 0 auto;
  }
  //左浮动
  .fl {
    float: left
  }
  //右浮动
  .fr {
    float: right;
  }
  .clar:after{
    content:".";
    display: block;
    clear: both;
    height: 0;
    overflow: hidden;
    visibility:hidden;
}
